Home / 209,947,068.36-315,061,070.13-87,125,381.64

Finding the Fourth Proportional to 209,947,068.36, 315,061,070.13 and 87,125,381.64

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Solution

The fourth proportional to 209,947,068.36, 315,061,070.13 and 87,125,381.64 is: 130,746,364.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,947,068.36 : 315,061,070.13 = 87,125,381.64 : x
  2. Step 2: Convert to fraction form
    209,947,068.36/315,061,070.13 = 87,125,381.64/x
  3. Step 3: Cross multiply
    209,947,068.36x = 315,061,070.13 × 87,125,381.64
  4. Step 4: Simplify right side
    209,947,068.36x = 27,449,815,974,983,056
  5. Step 5: Solve for x
    x = 27,449,815,974,983,056/209,947,068.36
  6. Step 6: Final answer
    x = 130,746,364.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.